Effect of Hemifacial Spasm on Intraocular Pressure Measurement

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT03390803

Enrollment

Registered

2018-01-04

Start date

2017-01-01

Completion date

2017-12-20

Last updated

2018-01-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hemifacial Spasm, Intraocular Pressure

Brief summary

Twenty-four consecutive patients with Hemifacial spasm and 25 age and gender-matched randomly selected eyes of healthy volunteers underwent corneal pachymetry and intraocular pressure measurements using Goldmann Applanation Tonometer and non-contact tonometer. An interval of 15 minutes was maintained between Goldmann Applanation Tonometer and non-contact tonometer measurements. Intraocular pressure measurements were performed before (during hemifacial spasm) and 2 weeks after Botox injections in Hemifacial spasm patients and in healthy volunteers without Botox injections. All the measurements with Goldmann Applanation Tonometer were carried out by a single physician while those with the non-contact tonometer were done by another physician who was masked to the results of the Goldmann Applanation Tonometer. All measurements were taken between 10:00 and 11:00 a.m.

Interventions

OTHEReffect of hemifacial spasm on intraocular pressure

To evaluate the effect of Hemifacial spasm on Intraocular pressure measurement.

Study design

Observational model

CASE_CONTROL

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

40 Years to 75 Years

Healthy volunteers

Yes

Inclusion criteria

* patients with hemifacial spasm

Exclusion criteria

* Subjects will be excluded if they have allergies to botulinum toxin or any component of the drug, previous eyelid, refractive or intraocular surgery, any abnormality preventing reliable tonometry in either eye, strabismus, contact lens wear, pregnancy, glaucoma, ocular hypertension and patients using agents that could interfere with neuromuscular transmission.

Design outcomes

Primary

Measure	Time frame	Description
Effect of Hemifacial Spasm on Intraocular Pressure Measurement Change	2 week	intraocular pressure measurements will be performed before and 2 weeks after Botox injections in patients with Hemifacial spasm (involved and uninvolved eyes of Hemifacial spasm both) and in healthy volunteers without Botox injections. The change between measurements will be evaluated.

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 25, 2026